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  pinia新的状态管理工具
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  <h4 id="pinia新的状态管理工具"><a href="#pinia新的状态管理工具" class="headerlink" title="pinia新的状态管理工具"></a>pinia新的状态管理工具</h4><h5 id="1、安装"><a href="#1、安装" class="headerlink" title="1、安装"></a>1、安装</h5><p><code>npm install pinia --save</code></p>
<h5 id="2、新建store-在main-js中引入"><a href="#2、新建store-在main-js中引入" class="headerlink" title="2、新建store,在main.js中引入"></a>2、新建store,在main.js中引入</h5><p><strong>在根目录下新建store文件夹，新建index.js</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; createPinia &#125; <span class="keyword">from</span> <span class="string">&quot;pinia&quot;</span>;</span><br><span class="line"><span class="comment">// 创建store</span></span><br><span class="line"><span class="keyword">const</span> store = createPinia();</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">default</span> store;</span><br></pre></td></tr></table></figure>
<p><strong>main.js</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; createApp &#125; <span class="keyword">from</span> <span class="string">&quot;vue&quot;</span>;</span><br><span class="line"><span class="keyword">import</span> App <span class="keyword">from</span> <span class="string">&quot;./App.vue&quot;</span>;</span><br><span class="line"><span class="keyword">import</span> store <span class="keyword">from</span> <span class="string">&quot;./store&quot;</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">const</span> app = createApp(App);</span><br><span class="line"></span><br><span class="line">app.use(store);</span><br><span class="line"></span><br><span class="line">app.mount(<span class="string">&quot;#app&quot;</span>);</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h5 id="3、在store文件夹下新建stateStore-js"><a href="#3、在store文件夹下新建stateStore-js" class="headerlink" title="3、在store文件夹下新建stateStore.js"></a>3、在store文件夹下新建stateStore.js</h5><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> &#123; defineStore &#125; <span class="keyword">from</span> <span class="string">&quot;pinia&quot;</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">export</span> <span class="keyword">const</span> stateStore = defineStore(&#123;</span><br><span class="line">  id: <span class="string">&quot;state&quot;</span>, <span class="comment">//命名</span></span><br><span class="line">  state: <span class="function">() =&gt;</span> &#123;</span><br><span class="line">    <span class="keyword">return</span> &#123;</span><br><span class="line">      name: <span class="string">&quot;菠萝&quot;</span>,</span><br><span class="line">      age: <span class="number">99</span>,</span><br><span class="line">    &#125;;</span><br><span class="line">  &#125;,</span><br><span class="line">  <span class="comment">//类似于计算属性</span></span><br><span class="line">  getters: &#123;</span><br><span class="line">    <span class="function"><span class="title">getterName</span>(<span class="params">state</span>)</span> &#123;</span><br><span class="line">      <span class="built_in">console</span>.log(<span class="string">&quot;使用了getter&quot;</span>);</span><br><span class="line">      <span class="keyword">return</span> <span class="string">&quot;我是什么水果？我是&quot;</span> + state.name;</span><br><span class="line">    &#125;,</span><br><span class="line">  &#125;,</span><br><span class="line">  actions: &#123;</span><br><span class="line">    <span class="comment">//还支持调用别的actions</span></span><br><span class="line">    <span class="function"><span class="title">updateName</span>(<span class="params">name, age</span>)</span> &#123;</span><br><span class="line">      <span class="built_in">this</span>.name = name;</span><br><span class="line">      <span class="built_in">this</span>.updateAge(age);</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="function"><span class="title">updateAge</span>(<span class="params">age</span>)</span> &#123;</span><br><span class="line">      <span class="built_in">this</span>.age = age;</span><br><span class="line">    &#125;,</span><br><span class="line">    <span class="comment">//action 可以像写一个简单的函数一样支持 async/await的语法</span></span><br><span class="line">    <span class="keyword">async</span> <span class="function"><span class="title">asyncfun</span>(<span class="params"></span>)</span> &#123;</span><br><span class="line">      <span class="keyword">const</span> timer = <span class="built_in">setTimeout</span>(<span class="function">() =&gt;</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.name = <span class="string">&quot;桃子&quot;</span>;</span><br><span class="line">      &#125;, <span class="number">1000</span>);</span><br><span class="line">      <span class="keyword">await</span> timer;</span><br><span class="line">    &#125;,</span><br><span class="line">  &#125;,</span><br><span class="line">&#125;);</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h5 id="4、使用"><a href="#4、使用" class="headerlink" title="4、使用"></a>4、使用</h5><p><strong>先引入创建的store</strong></p>
<p><strong>解构需要引入<code>storeToRefs</code></strong></p>
<p><strong>修改state数据可以直接修改，也可以使用<code>$patch</code>,也可以使用<code>actions</code>修改</strong></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line">  &lt;div&gt;</span><br><span class="line">    &lt;h1&gt;pinia:&#123;&#123; name &#125;&#125;&lt;&#x2F;h1&gt;</span><br><span class="line">    &lt;h1&gt;pinia:&#123;&#123; age &#125;&#125;&lt;&#x2F;h1&gt;</span><br><span class="line">    &lt;h1&gt;pinia.getter:&#123;&#123; state.getterName &#125;&#125;&lt;&#x2F;h1&gt;</span><br><span class="line">    &lt;el-button type&#x3D;&quot;primary&quot; @click&#x3D;&quot;changeName&quot;&gt;修改pinia&lt;&#x2F;el-button&gt;</span><br><span class="line">  &lt;&#x2F;div&gt;</span><br><span class="line">&lt;&#x2F;template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script setup&gt;</span><br><span class="line">import &#123; reactive, inject &#125; from &quot;vue&quot;;</span><br><span class="line">import &#123; stateStore &#125; from &quot;..&#x2F;store&#x2F;state&quot;;</span><br><span class="line">&#x2F;&#x2F;解构store</span><br><span class="line">import &#123; storeToRefs &#125; from &quot;pinia&quot;;</span><br><span class="line">const state &#x3D; stateStore();</span><br><span class="line">const &#123; age, name &#125; &#x3D; storeToRefs(state);</span><br><span class="line"></span><br><span class="line">const changeName &#x3D; () &#x3D;&gt; &#123;</span><br><span class="line">  &#x2F;&#x2F; 通过patch修改数据两种方式对象和函数</span><br><span class="line">  &#x2F;&#x2F; 1、对象</span><br><span class="line">  &#x2F;&#x2F;   state.$patch(&#123;</span><br><span class="line">  &#x2F;&#x2F;     name: &quot;西瓜&quot;,</span><br><span class="line">  &#x2F;&#x2F;     age: 100,</span><br><span class="line">  &#x2F;&#x2F;   &#125;);</span><br><span class="line">  &#x2F;&#x2F; 2、函数</span><br><span class="line">  &#x2F;&#x2F;   state.$patch((state) &#x3D;&gt; &#123;</span><br><span class="line">  &#x2F;&#x2F;     state.name &#x3D; &quot;哈密瓜&quot;;</span><br><span class="line">  &#x2F;&#x2F;     state.age &#x3D; 999;</span><br><span class="line">  &#x2F;&#x2F;   &#125;);</span><br><span class="line"></span><br><span class="line">  &#x2F;&#x2F; 通过action修改数据</span><br><span class="line">  state.updateName(&quot;香蕉&quot;, 88);</span><br><span class="line">  state.asyncfun();</span><br><span class="line">&#125;;</span><br><span class="line">&lt;&#x2F;script&gt;</span><br><span class="line"></span><br><span class="line">&lt;style lang&#x3D;&quot;less&quot; scoped&gt;&lt;&#x2F;style&gt;</span><br><span class="line"></span><br></pre></td></tr></table></figure>
 
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<!-- Root element of PhotoSwipe. Must have class pswp. -->
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">

    <!-- Background of PhotoSwipe. 
         It's a separate element as animating opacity is faster than rgba(). -->
    <div class="pswp__bg"></div>

    <!-- Slides wrapper with overflow:hidden. -->
    <div class="pswp__scroll-wrap">

        <!-- Container that holds slides. 
            PhotoSwipe keeps only 3 of them in the DOM to save memory.
            Don't modify these 3 pswp__item elements, data is added later on. -->
        <div class="pswp__container">
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
        </div>

        <!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
        <div class="pswp__ui pswp__ui--hidden">

            <div class="pswp__top-bar">

                <!--  Controls are self-explanatory. Order can be changed. -->

                <div class="pswp__counter"></div>

                <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>

                <button class="pswp__button pswp__button--share" style="display:none" title="Share"></button>

                <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>

                <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>

                <!-- Preloader demo http://codepen.io/dimsemenov/pen/yyBWoR -->
                <!-- element will get class pswp__preloader--active when preloader is running -->
                <div class="pswp__preloader">
                    <div class="pswp__preloader__icn">
                        <div class="pswp__preloader__cut">
                            <div class="pswp__preloader__donut"></div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
                <div class="pswp__share-tooltip"></div>
            </div>

            <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
            </button>

            <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
            </button>

            <div class="pswp__caption">
                <div class="pswp__caption__center"></div>
            </div>

        </div>

    </div>

</div>

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/default-skin/default-skin.min.css">
<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe-ui-default.min.js"></script>

<script>
    function viewer_init() {
        let pswpElement = document.querySelectorAll('.pswp')[0];
        let $imgArr = document.querySelectorAll(('.article-entry img:not(.reward-img)'))

        $imgArr.forEach(($em, i) => {
            $em.onclick = () => {
                // slider展开状态
                // todo: 这样不好，后面改成状态
                if (document.querySelector('.left-col.show')) return
                let items = []
                $imgArr.forEach(($em2, i2) => {
                    let img = $em2.getAttribute('data-idx', i2)
                    let src = $em2.getAttribute('data-target') || $em2.getAttribute('src')
                    let title = $em2.getAttribute('alt')
                    // 获得原图尺寸
                    const image = new Image()
                    image.src = src
                    items.push({
                        src: src,
                        w: image.width || $em2.width,
                        h: image.height || $em2.height,
                        title: title
                    })
                })
                var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, {
                    index: parseInt(i)
                });
                gallery.init()
            }
        })
    }
    viewer_init()
</script>

<!-- MathJax -->

<!-- Katex -->

<!-- busuanzi  -->


<script src="/myBlog/js/busuanzi-2.3.pure.min.js"></script>


<!-- ClickLove -->

<!-- ClickBoom1 -->

<!-- ClickBoom2 -->


<script src="/myBlog/js/clickBoom2.js"></script>


<!-- CodeCopy -->


<link rel="stylesheet" href="/myBlog/css/clipboard.css">

<script src="https://cdn.jsdelivr.net/npm/clipboard@2/dist/clipboard.min.js"></script>
<script>
  function wait(callback, seconds) {
    var timelag = null;
    timelag = window.setTimeout(callback, seconds);
  }
  !function (e, t, a) {
    var initCopyCode = function(){
      var copyHtml = '';
      copyHtml += '<button class="btn-copy" data-clipboard-snippet="">';
      copyHtml += '<i class="ri-file-copy-2-line"></i><span>COPY</span>';
      copyHtml += '</button>';
      $(".highlight .code pre").before(copyHtml);
      $(".article pre code").before(copyHtml);
      var clipboard = new ClipboardJS('.btn-copy', {
        target: function(trigger) {
          return trigger.nextElementSibling;
        }
      });
      clipboard.on('success', function(e) {
        let $btn = $(e.trigger);
        $btn.addClass('copied');
        let $icon = $($btn.find('i'));
        $icon.removeClass('ri-file-copy-2-line');
        $icon.addClass('ri-checkbox-circle-line');
        let $span = $($btn.find('span'));
        $span[0].innerText = 'COPIED';
        
        wait(function () { // 等待两秒钟后恢复
          $icon.removeClass('ri-checkbox-circle-line');
          $icon.addClass('ri-file-copy-2-line');
          $span[0].innerText = 'COPY';
        }, 2000);
      });
      clipboard.on('error', function(e) {
        e.clearSelection();
        let $btn = $(e.trigger);
        $btn.addClass('copy-failed');
        let $icon = $($btn.find('i'));
        $icon.removeClass('ri-file-copy-2-line');
        $icon.addClass('ri-time-line');
        let $span = $($btn.find('span'));
        $span[0].innerText = 'COPY FAILED';
        
        wait(function () { // 等待两秒钟后恢复
          $icon.removeClass('ri-time-line');
          $icon.addClass('ri-file-copy-2-line');
          $span[0].innerText = 'COPY';
        }, 2000);
      });
    }
    initCopyCode();
  }(window, document);
</script>


<!-- CanvasBackground -->


    
  </div>
</body>

</html>